<template>

    <ul class="app-header-nav">
        <li class="home">
            <RouterLink to="/">首页</RouterLink>
        </li>
        <li v-for="item in $store.getters.categoryList" :key="item.id" @mousemove="show(item)"
            @mouseleave="hide(item)">
            <RouterLink @click.native="hide(item)" :to="`/category/${item.id}`">{{item.name}}</RouterLink>
            <div class="layer" :class="{open:item.open}">
                <ul>
                    <li v-for="sub in item.children" :key="sub.id">
                        <RouterLink :to="`/category/sub/${sub.id}`" @click.native="hide(item)">
                            <img :src="sub.picture" alt="">
                            <p>{{sub.name}}</p>
                        </RouterLink>
                    </li>
                </ul>
            </div>
        </li>

    </ul>

</template>

<script>
    export default {
        name: "AppHeaderNav",
        methods: {
            show(item) {
                this.$store.commit('category/show', item)
            },
            hide(item) {
                this.$store.commit('category/hide', item)
            }
        }
    }
</script>

<style scoped lang="less">

    .app-header-nav {
        width: 820px;
        display: flex;
        padding-left: 40px;
        position: relative;
        z-index: 998;
        justify-content: space-around;

        > li {
            margin-right: 40px;
            width: 38px;
            text-align: center;

            > a {
                font-size: 16px;
                line-height: 32px;
                height: 32px;
                display: inline-block;
            }

            &:hover {
                > a {
                    color: @xtxColor;
                    border-bottom: 1px solid @xtxColor;
                }

                /*> .layer {*/
                /*    height: 132px;*/
                /*    opacity: 1;*/
                /*}*/
            }
        }
    }

    .layer {
        width: 1240px;
        background-color: #fff;
        position: absolute;
        left: -200px;
        top: 56px;
        height: 0;
        overflow: hidden;
        opacity: 0;
        box-shadow: 0 0 5px #ccc;
        transition: all .2s .1s;

        &.open {
            height: 132px;
            opacity: 1;
        }

        ul {
            display: flex;
            flex-wrap: wrap;
            padding: 0 70px;
            align-items: center;
            height: 132px;

            li {
                width: 110px;
                text-align: center;

                img {
                    width: 60px;
                    height: 60px;
                }

                p {
                    padding-top: 10px;
                }

                &:hover {
                    p {
                        color: @xtxColor;
                    }
                }
            }
        }
    }

</style>